Basic IF Statements

    var first_name = "Ricky"; 
    var last_name = "Bobby"; 
    var age = 45;
    var first = true; 
    var last = false;
    var bob; //undefined
    //Falsey
    //false, null, undefined, 0, “”, ‘’, NaN
    
    If(last){
    // won’t run, as last = false
    }
    
    If(age){
    // will run as age does not = 0
    }
    
    if( age == 45 ){
    // do something if true
    } else {
    // do something if false
    }